Automatic cutting-off device for thread-winders



N. RAIL.

AUTOMATIC CUTTING OFF DEVICE FOR THREAD WINDERS.

APPLICATION FILED MAR. 15, I919.

2 SHEETSSHEET I.

YNVENTOR. 2

' ATTORNEY.

Patented Jan. 13, 1920.

N. RAILx AUTOMATIC CUTTING OFF DEVICE FOR THREAD WINDERS.

APPLICATION FILED MAR. I5. 1919. v

Patented Jan. 13, 1920.

ARIEMMT flyfi 11v VENTOR.

A TTOR NE Y.

NAPOLEON RAIL, F LOWELL, MASSACHUSETTS.

AUTOMATIC CUTTING-OFF DEVICE FOR. THREAD-WINDERS.

Specification of Letters Patent.

Patented Jan. 13, 1920.

Application filed March 15, 1919. Serial No. 232,976.

To all whom it may concern: Be it known that I, NAPOLEON RAIL, a citizenof the United States, residing at Lowell,

in the county of Middlesex and State of Massachusetts, have inventedcertain new and useful Improvements in Automatic Cuttin -Off Devices forThread-Winders, of WhlCh the following is a specification.

This invention relates to machines for winding thread or yarn on a corewhich is usually in the form of a tube, particularly of the type whereina paper tube or cop is used.

It is especially useful for thread winding machines wherein the threadsof two or more spools or shuttle bobbins are wound upon a single papertube at the same time. In such machlnes, two or more ends of thread areso caught on a revoluble tube, usually carried bv a revoluble spindle,that separate bobbins are built up with spaces between.

When such bobbins are wound up to a predetermined point, a stop motionacts to stop the spindle and tube from revolving, after which each tubeis removed and cut off between the bobbins by a hand cutter, knife, orother suitable manually operable means.

The particular purpose of this invention is to provide automatic cuttingoff means which will score or cut the tube between the windings beforethe stop motion acts so that, when the tube is removed, the separatespools can be broken apart in the factory without further cutting, orcan be packed,

shipped and broken apart by theuser.

In the drawings, Figure 1 is a front elevation showing parts of a threadwinding machine of well known type with my attachment, the parts beingshown in the starting position and some parts broken away. Fig. 2 is afront elevation similar to Fig. 1, showing the parts in the position forremoving the finished bobbins. .Fig. 3 is an elevation from the left of'Fig. 1. Fig. 1 shows another form of knife. Fig. 5 is a perspectiveview showing four bobbins wound on a single paper tube, as they appearwhen removed from the machine. Fig. 6 is an enlarged detail view showinga cutter cutting the tube and the relation of the thread to the bobbinaud'spout guide. Fig. 7 is a plan, Fig. 8 an elevation from the rightand Fig. 9 an elevation from the left of the thread guide.

In the drawings, V represents the frame of the machine which carries inany suitable well known manner a revoluble spindle B upon which a tubeor cop such as A can be placed to receive the yarn or thread T and toact as a core for the bobbins 10, 11, 12, 13, to be formed by winding itup.

Such spindles are usually of the expan sion type, being split as at 14and having an expansion screw 15 which must be loosened to remove a tubeand tightened to hold it in place while revolving.

Such machines have a plate D which serves as a carrier for the threadguide C and is 50 supported by a hanger 1 pivoted to the frame at 4,that -it must be pushed back or caused to recede by the thread as it iswound on tube A guided by thread guide C as the bobbins are built up. Asuitable weight 2 or spring tends to press the carrier plate and guideup against the spindle or tu e. i

This carrier plate D usually carries also a stop motion arm 3 and stopscrew 5 which 'operate stop motion mechanism, not shown,

when the plate has receded to a predetermined point, by which thespindle and tube are stopped. I

The thread guide C is slidable transversely on plate D, being fixed byset screw 37 to a tube 36 which is caused to reciprocate-parallel withthe spindle whereby the bobbins are built up in a well known man ner.

The above parts are all old.

As the spindle revolves very rapidly, the bobbins are rapidly built upand one operator cannot usually handle more than two at a time. When thebobbin is removed after stop motion acts, the operator puts on a newtube, winds four ends thereon, as shown at 6, 7, 8, 9 in Fig. 3, and thespools 10, 11. 12, 13 are built up as tube A revolves and as guide Creciprocates.

As the ends 6, 7, 8, 9 are not accurately placed, they as well as thetube, must generally be cut to form separate bobbins.

To support my cutting device, I prefer to use two brackets X and Y. Bothare suitably bent and threaded whereby, as shown in Fig. 3, their ends62 and 63 can be passed through holes or slots in the frame and thebrackets adjusted and fixed in position by nuts 64 and 65. The end 66 ofY is shown as in line with the pivot rod 40 forming the end of X andserving as a pivot and guide for cutter carrier H.

My invention includes for each spindle, a cutter carrier H pivoted on 40or on any suitable bracket attached to the frame and having arms 41 and42 and a cutter shaft 43.

As shown in Figs. 1 to 3, I prefer to use disk cutters 44, 45, 46,loosely mounted between bushings 47 on shaft 43 in such positions as toenter between the bobbins which are to be formed and of such size thatwhen the cutters are swung forward past the tube A, they will cut intoor score it, as shown in Fig. 6 but will not strike the metal spindle B.

The carrier H and cutters are so mounted that they can swing past tube Band downward, as shown by the full lines in Fig. 2,

I to clear the built-up spools 10, 11, 12, 13

whereby they can be slipped off from the spindle when full.

To actuate the cutter carrier, I use a connecting rod 50 pivoted tocarrier H at 51 and passing through a slot 35 in plate D. Rod 50 isshown as threaded to receive an adjusting nut 53 which regulates thedistance between guide C and the cutters for different sizes of spools.On the other side of plate D is a compression spring 54, the

force of which is regulated by nuts 55. I prefer to use a fixed stop pin70 on pivot shaft with which a slot 71 on carrier H engages to limit.the downward movement thereof.

The parts are so adjusted that the cutters will cut the tubesufiiciently before the stop motion acts and I prefer to use diskcutters loosely mounted so that they will crzgwl and present new cuttingedges to the tu e.

As shown in Fig. 4, I may use knife cutters such as 60. In either case,as shown in Fig. 6, I prefer to adjust th parts so that the tube A willnot be cut entirely through but rooved or scored to a depth which issufficlent to allow. the tube to be broken apart. Such cutting, groovingor scoring also cuts the thread ends nearest the core in case theyextend between the windings.

Adjusting nut 53 holds back the cutters and prevents them fromprematurely cutting the tube which might result in separating parts ofthe tube with their windings from the others. As the front end only isheld by the expansion screw, such premature cutting would cause trouble.

On the other hand, if, as often happens, the spindle does not run trueand begins to shatter, the follower spring 54 yields and allows thecutters to follow its movements without cutting the spindle or dullingthe iutters.

53 and tension-nuts 55 allow the swing of the cutters and the tensionthereon to be changed for different sizes and types of work.

Usually several windings, such as the four shown, are made at thesametime and, for pro-per operation of'my automatic cutters as well as toavoid waste, it is very necessary that a suitable thread guide, whichwill lay the thread evenly and will have no tendency to roll it off theends, should be used.

I prefer to use, in connection with a guide (1 having a plurality ofthread guide slots 80 and round eyes 81 through which the thread passesfrom the tension rod 82, outlets formed with vertical V slots 83, as

9, whereby the thread T passes out through sort of spouts 85, as shownclearly in Fig. 6, and no part of the guide actually touches either thetube A or the spool.

With this construction, there is no rubbingby the guide against thewinding, which tends to cause the thread to fall over the ends, and thewindings on all four spools are accurate and precisely the same so thatall are finished at the same time and, when the stop motion acts, allare cut to the same depth.

In operating the device after the stop motion acts, the operator takeshold of the top of plate ,D, pulling it back and down to the positionshown in Fig. 2. He then loosens the expansion screw 15, cuts thethread, removes the filled tube, tucks in the ends, places a new tube onthe spindle, tightens the expansion screw, pushes up plate D and guide Cto the spindle and starts the machine.

I claim:

1. The combination ina thread winding machine having a frame, arevoluble spindle adapted to carry a paper tube, a thread guide carrierplate having a slot and adapted to move away from the tube as the threadis wound thereon, a reciprocating guide having guide eyes proximate suchtube and carried by said Plate, and mechanism operative by said platefor stopping such spindle when thetube has been wound to a predeterminedpoint, with acutter carrier so pivoted to the frame that it can swingpast the spindle, disk cutters loosely mounted thereon in such positionthat when the carrier is advanced they will out such tube,

carrier and extending through the guide carrier plate slot, a tensionnut thereon, and a spring between such nut and the guide carrier plate.

they will cut such tube, together with a con necting rod so arranged asto connect such plate and the cutter carrier in such manner that thecutters will advance and cut the tube as the plate recedes, before thestop motion acts. 7

3. The combination in a thread winding machine having a frame, arevoluble spindle adapted to carry a paper tube, a thread guide carrierplate having a slot and adapted to move away from the tube as the threadis wound thereon, a reciprocata ing guide having a plurality of guideeyes proximate such tube and carried by said plate, ,and mechanismoperative by said plate --for stopping such spindle when the tube hasbeen wound to a predetennined point, with a cutter carrier so pivoted tothe frame that it can swing past the spindle, disk cutters looselymounted thereon in such position that when the carrier is advancedtheyY-Will cut such tube, a connecting rod attached to the cuttercarrier and extending through the guide carrier plate slot, an adjustingnut on said rod between the guide plate and cutter carrier, a tensionnut'on said rod on the other side of the plate, and a follower springbetween said tension nut and plate. v

4:.- The combination in a thread winding machine having a revolublespindle adapted to carry a tube, a thread guide carrier plate adapted tomove away from the tube as the thread is wound thereon, and areciprocating thread guide having a plurality of thread guide outletsadjoining such spindle movable with said carrier plate, of cutters sopivoted that when advanced they will out such tube, together withconnecting means between such plate and cutters includ ing a' followerspring whereby as the plate recedes the cutters advance yieldingly.

5. The combination in a thread winding machine having a revolublespindle adapted to carry a paper tube, and a thread guide carrier plateadapted to move away from the tube as the thread is wound thereon -ofcutters so pivoted that when advanced they will out such tube, togetherwith connecting meansbetween such plate and cutters wherea by as theplate recedes the cutters advance.

6. The combination in a winding machine having arevoluble tube, and aplate adapted to move away from the tube as thread is wound thereon, ofcutters so pivoted that y when advanced they will out such tube,together with connecting means between such plate and cutters whereby asthe plate recedes the cutters advance. 7 The combination in a threadwindin machine having a revoluble spindle adapte to carry a tube, athread guide carrier plate having an opening and adapted to move awayfrom the tube as the thread is wound thereon, and a thread guide havinga thread guide outlet adjoining such spindle movable with said carrierplate, of a cutter carrier sopivoted to the' frame that it can swing upto the spindle, a cutter mounted thereon in' such position that when thecarrier is advanced it will out such tube, a connecting rod attached tothe cutter carrier and extending through the opening in the guidecarrier plate, an adjusting nut on Said rod between the guide plate andcutter carrier, a tension nut on said rod on the other side of theplate, and a follower NAPOLEON

